G21C 17/01
Inspection of the inner surfaces of vessels
G21C17/01 (Inspection of the inner surfaces of vessels) appears on 128 US grants and 82 published applications in this corpus.
Search patents in G21C- Granted patents
- 128
- Published applications
- 82
- Assignees
- 67
- Inventors
- 370
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 2 |
| 2004 | 1 | 3 |
| 2005 | 1 | 3 |
| 2006 | 2 | 1 |
| 2007 | 2 | 5 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 4 | 3 |
| 2011 | 0 | 2 |
| 2012 | 2 | 5 |
| 2013 | 0 | 7 |
| 2014 | 2 | 4 |
| 2015 | 5 | 8 |
| 2016 | 5 | 4 |
| 2017 | 9 | 2 |
| 2018 | 4 | 7 |
| 2019 | 4 | 5 |
| 2020 | 8 | 4 |
| 2021 | 1 | 2 |
| 2022 | 4 | 3 |
| 2023 | 2 | 1 |
| 2024 | 2 | 4 |
| 2025 | 1 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process and tools to perform reactor pressure vessel nozzle expansion mitigating primary coolant leakage10 Mar 2026US 12,573,513 B2GE-Hitachi Nuclear Energy Americas LLC
- Electrical penetration3 Mar 2026US 12,567,507 B2Hitachi GE Vernova Nuclear Energy, Ltd.
- Systems and methods for laser inspection and measurements1 Jul 2025US 12,347,575 B23D at Depth, Inc.
- Repairing system as well as repairing method27 Aug 2024US 12,073,950 B2Framatome
- Systems and methods for inspecting a machine5 Mar 2024US 11,923,096 B2Hitachi Energy Ltd
- Device for inspecting a nuclear reactor vessel9 Jul 2026US 2026/0196369 A1
- Reactor sampling device23 Apr 2026US 2026/0110602 A1Doosan Enerbility Co., Ltd.
- Electrical Penetration9 May 2024US 2024/0153656 A1Hitachi-GE Nuclear Energy, Ltd.
- Systems and methods for continually monitoring the condition of nuclear reactor internals4 Apr 2024US 2024/0112824 A1Westinghouse Electric Corp.
- Methods,systems, and apparatus for use in main pipes connected to branch conduit22 Feb 2024US 2024/0060592 A1INA Acquisition Corp.
Most cited
By later US patents
- Nozzle inner radius inspection system86US 4,526,037 ACombustion Engineering, Inc. · 1985
- Underwater vehicle and method of positioning same80US 5,852,984 AIshikawajimi-Harima Heavy Industries Co., Ltd. · 1998
- Method of ultrasonic inspection of materials through opaque barriers61US 5,118,464 AGeneral Electric Company · 1992
- Test system carrier for ultrasonic testing of nozzle seams, pipe connection seams and nozzle corners in pressure vessels, particularly reactor pressure vessels of nuclear power plants53US 4,117,733 AKraftwerk Union Aktiengesellschaft · 1978
- Method and system for inspection of inside of nuclear reactor vessel48US 4,311,556 AHitachi, Ltd. · 1982